public void Enumerate()
{
dq.PushFront(2);
dq.PushFront(1);
dq.PushBack(3);
dq.PushBack(4);
IEnumerator <int> e = dq.GetEnumerator();
Assert.IsTrue(e.MoveNext());
Assert.AreEqual(1, e.Current);
Assert.IsTrue(e.MoveNext());
Assert.AreEqual(2, e.Current);
Assert.IsTrue(e.MoveNext());
Assert.AreEqual(3, e.Current);
Assert.IsTrue(e.MoveNext());
Assert.AreEqual(4, e.Current);
Assert.IsFalse(e.MoveNext());
}
/// <summary>Gets an enumerator the debugger can use to show the contents of the channel.</summary> IEnumerator <T> IDebugEnumerable <T> .GetEnumerator() => _items.GetEnumerator();
